Digitech Legend II

[drewl]

Anyone find a schematic for the Legend II or stumble across one over the years?

Noise and distortion in one of the preamp stages, even in bypass mode but it's hard to follow the signal the way it's laid out.
Found some similar schems, might try and see which is closest and try going from there.

Thanks.

[Enzo]

Lacking documents, try going through the op amps. Make sure each has good power on the power pins. Then look at each output pin for DC offset. Touch each one with a finger, any getting hot?' In bypass mode tends to imply the chips near the inputs and outputs are the ones involved. Not always, but generally, those are near the I/O jacks. And try a sine wave in and just scope all the output pins and see if the wave is holding up.

[drewl]

Which is what I've been doing, but always good to double check.

[doctor]

Which is what I've been doing, but always good to double check.

Here is the scheme.

[drewl]

Thanks, that should speed things up.

Back in the late 90's I bought a used Valve FX that someone had hacked up the jack for the accompanying Contrl One controller.

One of the techs sent me the schematic after I told him of my abilities and that I had no intention of selling or giving to others.
I'm sure they could care less about that unit these days and figured someone might have the Legend schematic.

Surprised that the 2101 schematics are out there, bit that unit is old now too.
I've been rocking the GSP 1101 since about 2010.
Great for my purposes, had to finally crack it open last month to fix an intermittent filter cap.
Looks like a computer inside!

Thanks again.